US6143636A - High density flash memory - Google Patents
High density flash memory Download PDFInfo
- Publication number
- US6143636A US6143636A US09/137,328 US13732898A US6143636A US 6143636 A US6143636 A US 6143636A US 13732898 A US13732898 A US 13732898A US 6143636 A US6143636 A US 6143636A
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- 239000012212 insulator Substances 0.000 claims abstract description 25
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- 238000000034 method Methods 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000377 silicon dioxide Substances 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 238000005530 etching Methods 0.000 claims description 12
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- 238000003860 storage Methods 0.000 abstract description 10
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- 238000005229 chemical vapour deposition Methods 0.000 description 7
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- 229920002120 photoresistant polymer Polymers 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 210000000746 body region Anatomy 0.000 description 6
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
- G11C11/5621—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency using charge storage in a floating gate
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
- G11C16/0416—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing a single floating gate transistor and no select transistor, e.g. UV EPROM
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
- H01L29/7883—Programmable transistors with only two possible levels of programmation charging by tunnelling of carriers, e.g. Fowler-Nordheim tunnelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
- H01L29/7884—Programmable transistors with only two possible levels of programmation charging by hot carrier injection
- H01L29/7885—Hot carrier injection from the channel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7887—Programmable transistors with more than two possible different levels of programmation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/20—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B41/23—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
- H10B41/27—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels the channels comprising vertical portions, e.g. U-shaped channels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/137,328 US6143636A (en) | 1997-07-08 | 1998-08-20 | High density flash memory |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/889,553 US5936274A (en) | 1997-07-08 | 1997-07-08 | High density flash memory |
US09/137,328 US6143636A (en) | 1997-07-08 | 1998-08-20 | High density flash memory |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/889,553 Division US5936274A (en) | 1997-07-08 | 1997-07-08 | High density flash memory |
Publications (1)
Publication Number | Publication Date |
---|---|
US6143636A true US6143636A (en) | 2000-11-07 |
Family
ID=25395346
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/889,553 Expired - Lifetime US5936274A (en) | 1997-07-08 | 1997-07-08 | High density flash memory |
US09/137,328 Expired - Lifetime US6143636A (en) | 1997-07-08 | 1998-08-20 | High density flash memory |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/889,553 Expired - Lifetime US5936274A (en) | 1997-07-08 | 1997-07-08 | High density flash memory |
Country Status (1)
Country | Link |
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US (2) | US5936274A (en) |
Cited By (117)
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US6391721B2 (en) * | 1999-01-27 | 2002-05-21 | Fujitsu Limited | Non-volatile semiconductor memory device having vertical transistors and fabrication method therefor |
US6399979B1 (en) | 1997-07-08 | 2002-06-04 | Micron Technology, Inc. | Memory cell having a vertical transistor with buried source/drain and dual gates |
US6424001B1 (en) | 2001-02-09 | 2002-07-23 | Micron Technology, Inc. | Flash memory with ultra thin vertical body transistors |
US20020100942A1 (en) * | 2000-12-04 | 2002-08-01 | Fitzgerald Eugene A. | CMOS inverter and integrated circuits utilizing strained silicon surface channel MOSFETs |
US6465354B1 (en) * | 1998-11-10 | 2002-10-15 | Nec Corporation | Method of improving the planarization of wiring by CMP |
US20020164853A1 (en) * | 2000-08-22 | 2002-11-07 | Micron Technology, Inc. | Vertical gate transistors in pass transistor programmable logic arrays |
US6486703B2 (en) | 1998-08-04 | 2002-11-26 | Micron Technology, Inc. | Programmable logic array with vertical transistors |
US6486027B1 (en) * | 1998-02-27 | 2002-11-26 | Micron Technology, Inc. | Field programmable logic arrays with vertical transistors |
US6490196B1 (en) * | 2000-12-08 | 2002-12-03 | Ememory Technology Inc. | Method for operating a nonvolatile memory having embedded word lines |
US6498065B1 (en) | 1998-08-04 | 2002-12-24 | Micron Technology, Inc. | Memory address decode array with vertical transistors |
US20020197803A1 (en) * | 2001-06-21 | 2002-12-26 | Amberwave Systems Corporation | Enhancement of p-type metal-oxide-semiconductor field effect transistors |
US20030013323A1 (en) * | 2001-06-14 | 2003-01-16 | Richard Hammond | Method of selective removal of SiGe alloys |
US6528837B2 (en) | 1997-10-06 | 2003-03-04 | Micron Technology, Inc. | Circuit and method for an open bit line memory cell with a vertical transistor and trench plate trench capacitor |
US20030042528A1 (en) * | 2001-08-30 | 2003-03-06 | Leonard Forbes | Sram cells with repressed floating gate memory, low tunnel barrier interpoly insulators |
US20030048666A1 (en) * | 2001-08-30 | 2003-03-13 | Micron Technology, Inc. | Graded composition metal oxide tunnel barrier interpoly insulators |
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US20030057439A1 (en) * | 2001-08-09 | 2003-03-27 | Fitzgerald Eugene A. | Dual layer CMOS devices |
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